JMultiple button combination

[GiantDwarf01]

Hi, so I'm trying to set up my keyboard and joystick stuff and I'm wondering, can I make it where if i press a certain combo of buttons it'll register as another button? To better explain - can i have 2 buttons, let's say they're A and B on a N64 game, register as Z when pressed at the same time (despite the problems it may pose in game, this is just theoretical)? And also have the joystick the analog stick normally, the d-pad when button 1 is pressed, and the c buttons when button 2 is pressed? Basically, I have a limited number of buttons, but still want to set it up to play games with more buttons using key combinations. I know there may be issues with my example in terms of playing the game and stuff, but again, I just want to know if its possible to fake extra buttons essentially.